How hard today?
Your Bell Score reads sleep, HRV and training load, then sets today's session: recover, steady or push.
Kettlebell training for iPhone. Every rep counts toward your first Tonne.

One bell, a hundred moves and no idea what today should be. Tonzo picks the session, scales it to the bells you own and keeps count.
Your Bell Score reads sleep, HRV and training load, then sets today's session: recover, steady or push.
Phone on the floor. Tonzo calls the rounds, counts the reps and the rest.
Every rep adds up to tonnes, week on week.
Today's session is already waiting, scaled to the bells you own. Swap any move in a tap.
Phone on the floor. A big clock, read from the mat. Tonzo calls the rounds, you swing.
Ten swings a minute with a 16 kg bell, for eight minutes.
1,280kg
A cow and a piano, with room to spare.
Your weight moved, in things you can pick up. Go on, try.
400 kg
650 kg
1.5 t
5 t
1.2 tNot feeling the one-arm swing? Swap it for another hinge in a tap.
Rate each session. Tonzo tunes next week to fit.
A test every 4 to 6 weeks shows what's really changed and tunes your plan.
A voice coach that's soft, pushy or extreme. Pick who you train with.
Every Sunday: what you moved, and what it's as heavy as.
Pick your days. On the others, rest, or take a short mobility Snack.




EMOM
Make your own sessions, test what changed, and train the hardest program.
An iPhone and a kettlebell. Tonzo scales every session to the bells you own, so one is enough to start.
1,000 kg of weight moved. Ten swings a minute with a 16 kg bell for eight minutes is 1,280 kg: a cow and a piano, with room to spare.
First Bell (4 weeks), Strong and Steady (6 weeks), Iron Engine (8 weeks) and Little and Often (4 weeks, 10 minutes a day).
Build your own workouts, timers and plans, a plan that adapts every week, every program, benchmark and Snack, your coach in the tone you pick, and your full history with weekly statements.
Only about testing.
No. Tonzo is iPhone only.